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` W. H. HASKELL.

THILL GOUPLING. No. 887,414. Patented Aug. 7, 1888.

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IINTTTED STATES PATENT Ormea WILLIAM II. IIASKELL, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO HIMSELF, GEORGE XV. HASKELL, AND HENRY J.HASKELL, ALL OF SAME PLACE.

THILL-COUPLlNG.

S'PECIPIGATIN forming part of Letters Patent No. 387,414, dated August7, 1888.

Application filed May 28, 1888. Serial No. 275,282.

To all whom it may concern.:

Be it known that I, WILLIAM H. HAsKELL, a citizen of the United States,residing at Philadelphia, Pennsylvania, have invented certainImprovements in Thill-Couplings, of

which the following is a specification.

My invention consists of certain improvements in the thill-couplingforming the subject of previous Letters Patent Nos. 185,528,

1o 205,082, and 279,381, one object of my present invention being tosimplify and cheapen the construction of the coupling, and a furtherobject being to render it easier of operation than those beforepatented. These objects I attain in the manner hereinafter set forth,reference being had to the accompanying drawings, in which- Figure l isa section of the coupling in its operative position. Fig. 2 is a similarview 2o showing the parts adj usted to permit the detaching of the thillfrom the coupling, and Figs. 3 to 7 are detached perspective views ofthe various parts composing the coupling.

A represents part of the axle, to which the g5 usual clip, a, is securedby means of a transverse bar, b, and nuts d, the clip having in front ofthe axle opposite projecting ears f, between which its the eye g of thethill-iron B, the opposite ears having openings for the 3o reception ofthe pivot-pin D of the thill.

Fitting between the ears f of the clip is a frictionblock, F, which haslugs i, bearing upon the tops of the ears, and is provided with aspringarm, G, the lower end of which engages with a grooved collar, h,secured to or forming part of a screw-stem, I, the latter being adaptedto a nut, m, which is swiveled to the lower end of a frame, J,comprising opposite plates n, connected by a transverse 4o bar, p, theseplates having a bearing upon the axle at m, and being hooked at theirupper ends for adaptation to the grooved end portions of the pivot-boltD of the thill, these end portions projecting beyond the opposite earsfof the clip when the bolt is applied to the thill-eye.

When the upper hooked ends of the plates n are in engagement with therecessed ends of (No model.)

the pivot-pin, and said plates have their bearing upon the axle, theposition of the nut m 5o may be said to be fixed, and by turning thescrew-stem I the lower end of the spring-arm G may be drawn outward, soas to draw the friction-block F firmly against the thill-eye,

1and thus prevent rattling of the same. When 55 it is desired to detachthe thill, however, the screw-stem I is so manipulated as to drawforward the nut m and the lower ends of the plates n, the bearings ofsaid plates upon the axle forming a fulcrnm, and thus causing the 6oupper hooked ends of the plates to be lifted free from engagement withthe projecting recessed ends of the pivot-pin D of the thill, as shownin Fig. 2, so that said pin may be withdrawn laterally and the thillremoved, a reversal of the direction of movement of the screw-stemserving to again lock the parts in position on the reinsertion of thethill and its pivot-pin.

While my present coupling has all the ad- 7o vantages of the previouscoupling as regards the use of the ordinary clip with its ears and theordinary thill-iron, the present coupling is simpler and cheaper inconstruction and more readily operated than those before patented.

The pivot-pin D is independent of the plates f, sothat the thill can bedetached without necessitating lateral movement of said plates, the onlymanipulation necessary in Order to 8o confine or release the thill beingthe turning of the screw-stem I.

The friction-block F is recessed in the center, so as to bear only uponthe end portions of the thill-eye, and thus laterally confine the same,as in the coupling shown in Patent No. 205,082.

Having thus described my invention', what I claim, and desire to secureby Letters Patent, 1s 9o 1. The combination of the clip and its ears,the thill-iron and its pivot-pin, the frictionblock having a projectingarm, the lockingplates engaging with the pivot-pin and having a bearingon the axle, and a screw-stem and nut for acting on the plates and onthe arm.

of the frictionblock, all substantially as speci- In testimony whereoflhave signed my name 10 lied. to this specification in the presence oftwo sub- 2. The combination of the axle-c1ip having scribing witnesses.projecting ears, the thill -irou and its pivo 5 pin, the friction blockand its spring arm, WM. H. HASKELL.

locking-plates fulcrunxed on the axle and engaging with the pivot-pin,and a screw-stem Witnesss: and nut; for operating the friction-block andWILLIAM D. CONNER, Making-plates, all substantially as specified. HARRYSMITH.

